About 400 firefighters aided by fixed-wing helicopters were battling the flames, Gediman said.

The cause wasn't immediately known.

About 100 homes in Foresta and the small community of Old El Portal were evacuated. Two shelters were opened for people and animals.

"There have been no injuries so far, which is wonderful," Gediman said.

The park itself, home to such sites as Half Dome mountain, Yosemite Meadows, a grove of Giant Sequoia trees and other wonders, remained open Sunday. Gediman said that none of its treasures were threatened, although some areas were smoky.

The Crane Flat campground and Highway 120, a major highway leading to the park from the San Francisco Bay Area, were closed, but other roads were open. Hotels and other amenities in the area also remained open.

From the web

The Obama administration will unveil a major climate change plan Monday aimed at a large reduction in greenhouse gas emissions from the nation's coal-burning power plants, a senior administration official told CNN.